clockwerk-opensim-stable – Rev 1
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/*
* Copyright (c) Contributors, http://opensimulator.org/
* See CONTRIBUTORS.TXT for a full list of copyright holders.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
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* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the OpenSimulator Project nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
using System;
using System.Collections;
using System.Collections.Generic;
using System.Reflection;
using log4net;
using Nini.Config;
using OpenMetaverse;
using OpenMetaverse.StructuredData;
using OpenSim.Framework;
using OpenSim.Framework.Capabilities;
using OpenSim.Region.Framework.Interfaces;
using OpenSim.Framework.Servers.HttpServer;
using OpenSim.Services.Interfaces;
using Caps = OpenSim.Framework.Capabilities.Caps;
namespace OpenSim.Capabilities.Handlers
{
public class WebFetchInvDescHandler
{
private static readonly ILog m_log =
LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
private IInventoryService m_InventoryService;
private ILibraryService m_LibraryService;
// private object m_fetchLock = new Object();
public WebFetchInvDescHandler(IInventoryService invService, ILibraryService libService)
{
m_InventoryService = invService;
m_LibraryService = libService;
}
public string FetchInventoryDescendentsRequest(string request, string path, string param, IOSHttpRequest httpRequest, IOSHttpResponse httpResponse)
{
// lock (m_fetchLock)
// {
// m_log.DebugFormat("[WEB FETCH INV DESC HANDLER]: Received request {0}", request);
// nasty temporary hack here, the linden client falsely
// identifies the uuid 00000000-0000-0000-0000-000000000000
// as a string which breaks us
//
// correctly mark it as a uuid
//
request = request.Replace("<string>00000000-0000-0000-0000-000000000000</string>", "<uuid>00000000-0000-0000-0000-000000000000</uuid>");
// another hack <integer>1</integer> results in a
// System.ArgumentException: Object type System.Int32 cannot
// be converted to target type: System.Boolean
//
request = request.Replace("<key>fetch_folders</key><integer>0</integer>", "<key>fetch_folders</key><boolean>0</boolean>");
request = request.Replace("<key>fetch_folders</key><integer>1</integer>", "<key>fetch_folders</key><boolean>1</boolean>");
Hashtable hash = new Hashtable();
try
{
hash = (Hashtable)LLSD.LLSDDeserialize(Utils.StringToBytes(request));
}
catch (LLSD.LLSDParseException e)
{
m_log.ErrorFormat("[WEB FETCH INV DESC HANDLER]: Fetch error: {0}{1}" + e.Message, e.StackTrace);
m_log.Error("Request: " + request);
}
ArrayList foldersrequested = (ArrayList)hash["folders"];
string response = "";
for (int i = 0; i < foldersrequested.Count; i++)
{
string inventoryitemstr = "";
Hashtable inventoryhash = (Hashtable)foldersrequested[i];
LLSDFetchInventoryDescendents llsdRequest = new LLSDFetchInventoryDescendents();
try
{
LLSDHelpers.DeserialiseOSDMap(inventoryhash, llsdRequest);
}
catch (Exception e)
{
m_log.Debug("[WEB FETCH INV DESC HANDLER]: caught exception doing OSD deserialize" + e);
}
LLSDInventoryDescendents reply = FetchInventoryReply(llsdRequest);
inventoryitemstr = LLSDHelpers.SerialiseLLSDReply(reply);
inventoryitemstr = inventoryitemstr.Replace("<llsd><map><key>folders</key><array>", "");
inventoryitemstr = inventoryitemstr.Replace("</array></map></llsd>", "");
response += inventoryitemstr;
}
if (response.Length == 0)
{
// Ter-guess: If requests fail a lot, the client seems to stop requesting descendants.
// Therefore, I'm concluding that the client only has so many threads available to do requests
// and when a thread stalls.. is stays stalled.
// Therefore we need to return something valid
response = "<llsd><map><key>folders</key><array /></map></llsd>";
}
else
{
response = "<llsd><map><key>folders</key><array>" + response + "</array></map></llsd>";
}
// m_log.DebugFormat("[WEB FETCH INV DESC HANDLER]: Replying to CAPS fetch inventory request");
//m_log.Debug("[WEB FETCH INV DESC HANDLER] "+response);
return response;
// }
}
/// <summary>
/// Construct an LLSD reply packet to a CAPS inventory request
/// </summary>
/// <param name="invFetch"></param>
/// <returns></returns>
private LLSDInventoryDescendents FetchInventoryReply(LLSDFetchInventoryDescendents invFetch)
{
LLSDInventoryDescendents reply = new LLSDInventoryDescendents();
LLSDInventoryFolderContents contents = new LLSDInventoryFolderContents();
contents.agent_id = invFetch.owner_id;
contents.owner_id = invFetch.owner_id;
contents.folder_id = invFetch.folder_id;
reply.folders.Array.Add(contents);
InventoryCollection inv = new InventoryCollection();
inv.Folders = new List<InventoryFolderBase>();
inv.Items = new List<InventoryItemBase>();
int version = 0;
int descendents = 0;
inv
= Fetch(
invFetch.owner_id, invFetch.folder_id, invFetch.owner_id,
invFetch.fetch_folders, invFetch.fetch_items, invFetch.sort_order, out version, out descendents);
if (inv != null && inv.Folders != null)
{
foreach (InventoryFolderBase invFolder in inv.Folders)
{
contents.categories.Array.Add(ConvertInventoryFolder(invFolder));
}
descendents += inv.Folders.Count;
}
if (inv != null && inv.Items != null)
{
foreach (InventoryItemBase invItem in inv.Items)
{
contents.items.Array.Add(ConvertInventoryItem(invItem));
}
}
contents.descendents = descendents;
contents.version = version;
// m_log.DebugFormat(
// "[WEB FETCH INV DESC HANDLER]: Replying to request for folder {0} (fetch items {1}, fetch folders {2}) with {3} items and {4} folders for agent {5}",
// invFetch.folder_id,
// invFetch.fetch_items,
// invFetch.fetch_folders,
// contents.items.Array.Count,
// contents.categories.Array.Count,
// invFetch.owner_id);
return reply;
}
/// <summary>
/// Handle the caps inventory descendents fetch.
/// </summary>
/// <param name="agentID"></param>
/// <param name="folderID"></param>
/// <param name="ownerID"></param>
/// <param name="fetchFolders"></param>
/// <param name="fetchItems"></param>
/// <param name="sortOrder"></param>
/// <param name="version"></param>
/// <returns>An empty InventoryCollection if the inventory look up failed</returns>
private InventoryCollection Fetch(
UUID agentID, UUID folderID, UUID ownerID,
bool fetchFolders, bool fetchItems, int sortOrder, out int version, out int descendents)
{
// m_log.DebugFormat(
// "[WEB FETCH INV DESC HANDLER]: Fetching folders ({0}), items ({1}) from {2} for agent {3}",
// fetchFolders, fetchItems, folderID, agentID);
// FIXME MAYBE: We're not handling sortOrder!
version = 0;
descendents = 0;
InventoryFolderImpl fold;
if (m_LibraryService != null && m_LibraryService.LibraryRootFolder != null && agentID == m_LibraryService.LibraryRootFolder.Owner)
{
if ((fold = m_LibraryService.LibraryRootFolder.FindFolder(folderID)) != null)
{
InventoryCollection ret = new InventoryCollection();
ret.Folders = new List<InventoryFolderBase>();
ret.Items = fold.RequestListOfItems();
descendents = ret.Folders.Count + ret.Items.Count;
return ret;
}
}
InventoryCollection contents = new InventoryCollection();
if (folderID != UUID.Zero)
{
contents = m_InventoryService.GetFolderContent(agentID, folderID);
InventoryFolderBase containingFolder = new InventoryFolderBase();
containingFolder.ID = folderID;
containingFolder.Owner = agentID;
containingFolder = m_InventoryService.GetFolder(containingFolder);
if (containingFolder != null)
{
// m_log.DebugFormat(
// "[WEB FETCH INV DESC HANDLER]: Retrieved folder {0} {1} for agent id {2}",
// containingFolder.Name, containingFolder.ID, agentID);
version = containingFolder.Version;
if (fetchItems)
{
List<InventoryItemBase> itemsToReturn = contents.Items;
List<InventoryItemBase> originalItems = new List<InventoryItemBase>(itemsToReturn);
// descendents must only include the links, not the linked items we add
descendents = originalItems.Count;
// Add target items for links in this folder before the links themselves.
foreach (InventoryItemBase item in originalItems)
{
if (item.AssetType == (int)AssetType.Link)
{
InventoryItemBase linkedItem = m_InventoryService.GetItem(new InventoryItemBase(item.AssetID));
// Take care of genuinely broken links where the target doesn't exist
// HACK: Also, don't follow up links that just point to other links. In theory this is legitimate,
// but no viewer has been observed to set these up and this is the lazy way of avoiding cycles
// rather than having to keep track of every folder requested in the recursion.
if (linkedItem != null && linkedItem.AssetType != (int)AssetType.Link)
itemsToReturn.Insert(0, linkedItem);
}
}
// Now scan for folder links and insert the items they target and those links at the head of the return data
foreach (InventoryItemBase item in originalItems)
{
if (item.AssetType == (int)AssetType.LinkFolder)
{
InventoryCollection linkedFolderContents = m_InventoryService.GetFolderContent(ownerID, item.AssetID);
List<InventoryItemBase> links = linkedFolderContents.Items;
itemsToReturn.InsertRange(0, links);
foreach (InventoryItemBase link in linkedFolderContents.Items)
{
// Take care of genuinely broken links where the target doesn't exist
// HACK: Also, don't follow up links that just point to other links. In theory this is legitimate,
// but no viewer has been observed to set these up and this is the lazy way of avoiding cycles
// rather than having to keep track of every folder requested in the recursion.
if (link != null)
{
// m_log.DebugFormat(
// "[WEB FETCH INV DESC HANDLER]: Adding item {0} {1} from folder {2} linked from {3}",
// link.Name, (AssetType)link.AssetType, item.AssetID, containingFolder.Name);
InventoryItemBase linkedItem
= m_InventoryService.GetItem(new InventoryItemBase(link.AssetID));
if (linkedItem != null)
itemsToReturn.Insert(0, linkedItem);
}
}
}
}
}
// foreach (InventoryItemBase item in contents.Items)
// {
// m_log.DebugFormat(
// "[WEB FETCH INV DESC HANDLER]: Returning item {0}, type {1}, parent {2} in {3} {4}",
// item.Name, (AssetType)item.AssetType, item.Folder, containingFolder.Name, containingFolder.ID);
// }
// =====
//
// foreach (InventoryItemBase linkedItem in linkedItemsToAdd)
// {
// m_log.DebugFormat(
// "[WEB FETCH INV DESC HANDLER]: Inserted linked item {0} for link in folder {1} for agent {2}",
// linkedItem.Name, folderID, agentID);
//
// contents.Items.Add(linkedItem);
// }
//
// // If the folder requested contains links, then we need to send those folders first, otherwise the links
// // will be broken in the viewer.
// HashSet<UUID> linkedItemFolderIdsToSend = new HashSet<UUID>();
// foreach (InventoryItemBase item in contents.Items)
// {
// if (item.AssetType == (int)AssetType.Link)
// {
// InventoryItemBase linkedItem = m_InventoryService.GetItem(new InventoryItemBase(item.AssetID));
//
// // Take care of genuinely broken links where the target doesn't exist
// // HACK: Also, don't follow up links that just point to other links. In theory this is legitimate,
// // but no viewer has been observed to set these up and this is the lazy way of avoiding cycles
// // rather than having to keep track of every folder requested in the recursion.
// if (linkedItem != null && linkedItem.AssetType != (int)AssetType.Link)
// {
// // We don't need to send the folder if source and destination of the link are in the same
// // folder.
// if (linkedItem.Folder != containingFolder.ID)
// linkedItemFolderIdsToSend.Add(linkedItem.Folder);
// }
// }
// }
//
// foreach (UUID linkedItemFolderId in linkedItemFolderIdsToSend)
// {
// m_log.DebugFormat(
// "[WEB FETCH INV DESC HANDLER]: Recursively fetching folder {0} linked by item in folder {1} for agent {2}",
// linkedItemFolderId, folderID, agentID);
//
// int dummyVersion;
// InventoryCollection linkedCollection
// = Fetch(
// agentID, linkedItemFolderId, ownerID, fetchFolders, fetchItems, sortOrder, out dummyVersion);
//
// InventoryFolderBase linkedFolder = new InventoryFolderBase(linkedItemFolderId);
// linkedFolder.Owner = agentID;
// linkedFolder = m_InventoryService.GetFolder(linkedFolder);
//
//// contents.Folders.AddRange(linkedCollection.Folders);
//
// contents.Folders.Add(linkedFolder);
// contents.Items.AddRange(linkedCollection.Items);
// }
// }
}
}
else
{
// Lost items don't really need a version
version = 1;
}
return contents;
}
/// <summary>
/// Convert an internal inventory folder object into an LLSD object.
/// </summary>
/// <param name="invFolder"></param>
/// <returns></returns>
private LLSDInventoryFolder ConvertInventoryFolder(InventoryFolderBase invFolder)
{
LLSDInventoryFolder llsdFolder = new LLSDInventoryFolder();
llsdFolder.folder_id = invFolder.ID;
llsdFolder.parent_id = invFolder.ParentID;
llsdFolder.name = invFolder.Name;
llsdFolder.type = invFolder.Type;
llsdFolder.preferred_type = -1;
return llsdFolder;
}
/// <summary>
/// Convert an internal inventory item object into an LLSD object.
/// </summary>
/// <param name="invItem"></param>
/// <returns></returns>
private LLSDInventoryItem ConvertInventoryItem(InventoryItemBase invItem)
{
LLSDInventoryItem llsdItem = new LLSDInventoryItem();
llsdItem.asset_id = invItem.AssetID;
llsdItem.created_at = invItem.CreationDate;
llsdItem.desc = invItem.Description;
llsdItem.flags = (int)invItem.Flags;
llsdItem.item_id = invItem.ID;
llsdItem.name = invItem.Name;
llsdItem.parent_id = invItem.Folder;
llsdItem.type = invItem.AssetType;
llsdItem.inv_type = invItem.InvType;
llsdItem.permissions = new LLSDPermissions();
llsdItem.permissions.creator_id = invItem.CreatorIdAsUuid;
llsdItem.permissions.base_mask = (int)invItem.CurrentPermissions;
llsdItem.permissions.everyone_mask = (int)invItem.EveryOnePermissions;
llsdItem.permissions.group_id = invItem.GroupID;
llsdItem.permissions.group_mask = (int)invItem.GroupPermissions;
llsdItem.permissions.is_owner_group = invItem.GroupOwned;
llsdItem.permissions.next_owner_mask = (int)invItem.NextPermissions;
llsdItem.permissions.owner_id = invItem.Owner;
llsdItem.permissions.owner_mask = (int)invItem.CurrentPermissions;
llsdItem.sale_info = new LLSDSaleInfo();
llsdItem.sale_info.sale_price = invItem.SalePrice;
llsdItem.sale_info.sale_type = invItem.SaleType;
return llsdItem;
}
}
}
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